Systematic Circulation
Systemic circulation is the part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart. Is is what the arteries and veins do.
The heart sends oxygenated blood through the arteries to the capillaries, where the oxygen is then taken out of it. After it has become deoxygenated, it goes through the veins back to the heart, where the process starts all over again.
The heart sends oxygenated blood through the arteries to the capillaries, where the oxygen is then taken out of it. After it has become deoxygenated, it goes through the veins back to the heart, where the process starts all over again.
Pulmonary Circulation
Pulmonary circulation is the part of the cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated blood back to the heart. It is what the Pulmonary Artery and the Pulmonary Veins do.
The heart sends deoxygenated blood through the pulmonary arteries to the lungs, but along the way they branch off and get small enough so that they can wrap around these small sacks in the lungs called alveoli. Once they have absorbed oxygen through them, they come back to the heart through the pulmonary veins, but on the way, they regroup into the size they were before.
The heart sends deoxygenated blood through the pulmonary arteries to the lungs, but along the way they branch off and get small enough so that they can wrap around these small sacks in the lungs called alveoli. Once they have absorbed oxygen through them, they come back to the heart through the pulmonary veins, but on the way, they regroup into the size they were before.
Arteries
Arteries transport oxygenated blood to the capillaries.
Veins
Veins transport deoxygenated blood from the capillaries to the heart.
Difference Between Arteries and Veins
First and foremost, the most basic difference between Veins and Arteries is that arteries take blood away from the heart, and then veins take blood back to the heart.
Secondly, The veins that carry oxygenated blood around the body are red, while the veins that carry the deoxygenated blood away from the body are blue. There is one exception, and that is that the pulmonary artery carrying deoxygenated blood to the lungs are blue, while the pulmonary veins carrying oxygenated blood from the lungs to the heart, is red.
Thirdly, Arteries have a very high pressure, with a small volume, while it is the opposite with Veins, as they have generally pretty low pressure, but they have a very large volume. If you were to cut an artery, blood would squirt everywhere from the pressure buildup, however, if you to cut a vein, it would only slowly seep out some blood, a very minor cut.
At all times, the heart has about 5% of the blood, the capillaries have about 5%, the lungs have around 10%, the arteries have about 15%, and the remaining 65% of the blood is in the veins.
Another difference is that veins have valves, while arteries don't have them, simply because they don't need them, the veins are big enough that they need something to help keep the blood in a straight path, therefore, valves.
Secondly, The veins that carry oxygenated blood around the body are red, while the veins that carry the deoxygenated blood away from the body are blue. There is one exception, and that is that the pulmonary artery carrying deoxygenated blood to the lungs are blue, while the pulmonary veins carrying oxygenated blood from the lungs to the heart, is red.
Thirdly, Arteries have a very high pressure, with a small volume, while it is the opposite with Veins, as they have generally pretty low pressure, but they have a very large volume. If you were to cut an artery, blood would squirt everywhere from the pressure buildup, however, if you to cut a vein, it would only slowly seep out some blood, a very minor cut.
At all times, the heart has about 5% of the blood, the capillaries have about 5%, the lungs have around 10%, the arteries have about 15%, and the remaining 65% of the blood is in the veins.
Another difference is that veins have valves, while arteries don't have them, simply because they don't need them, the veins are big enough that they need something to help keep the blood in a straight path, therefore, valves.